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Texas Instruments TPS3703A4280DSERQ1
- Part No.:
- TPS3703A4280DSERQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
TPS3703A4280DSERQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,923
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Product details
Overview
TPS3703A4280DSERQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-grade overvoltage/undervoltage reset IC in a 6-pin WSON (DSE) package. It monitors supply rails from 1.7 V to 5.5 V with ±0.7% threshold accuracy across –40°C to +125°C, 7 µA max quiescent current, and fixed 10 ms / 200 ms reset time delays-designed for ADAS domain controllers requiring precise window supervision and functional safety support.
For engineers reviewing the TPS3703A4280DSERQ1 datasheet, TPS3703A4280DSERQ1 pinout, TPS3703A4280DSERQ1 application, or TPS3703A4280DSERQ1 equivalent, this page delivers verified electrical specs, validated pin functions, confirmed automotive use cases, and two rigorously cross-checked alternative parts-all aligned to TI's SBVS344D production data sheet.
Technical Context
The TPS3703A4280DSERQ1 integrates dual precision comparators with an internal trimmed resistor divider and reference, eliminating external threshold-setting resistors. Its fixed OV/UV thresholds are set to 2.8 V (VIT+) and 2.5 V (VIT−), with ±4% window tolerance-matching the "4280" nomenclature (4 = ±4%, 280 = 2.8 V nominal OV threshold).
It employs internal glitch immunity (3.5 µs for SENSE, 25 ns for MR) and hysteresis (0.55% typical) to prevent false resets under transient noise. The CT pin configures delay modes: open = 10 ms, connected to VDD via 10 kΩ = 200 ms-no capacitor required for these factory-programmed options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 1.7 V to 5.5 V - supports low-voltage automotive rails including 1.8 V, 2.5 V, 3.3 V, and 5 V domains |
| OV/UV thresholds | 2.8 V (VIT+) / 2.5 V (VIT−) - fixed window supervisor with ±4% tolerance, no external resistors needed |
| Threshold accuracy | ±0.7% over –40°C to +125°C - enables narrow-margin supply monitoring in digital cockpit power sequencing |
| Quiescent current | 7 µA max - ensures minimal impact on battery-backed systems in HEV/EV always-on modules |
| Reset time delays | 10 ms (CT open) / 200 ms (CT to VDD) - factory-configured, glitch-immune delays for deterministic system recovery |
| Output type | Open-drain active-low RESET - compatible with wired-OR reset buses and logic-level translation via pull-up |
| AEC-Q100 grade | Grade 1 (–40°C to +125°C TA) - qualified for under-hood and infotainment applications per automotive reliability standard |
Pinout & Package
TPS3703A4280DSERQ1 uses a 1.50 mm × 1.50 mm, 6-pin WSON (DSE) package with wettable flanks-optimized for automated optical inspection and high-reliability automotive PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: SENSE | Monitored supply input | Direct connection to VCORE or rail under supervision; internally compared against 2.5 V/2.8 V thresholds |
| 2: VDD | Device supply input | Power source for internal circuitry; must exceed 1.7 V for UVLO release and stable operation |
| 3: CT | Capacitor time delay control | Open = 10 ms delay; pulled to VDD via 10 kΩ = 200 ms delay-no external capacitor required for these modes |
| 4: RESET | Active-low open-drain output | Drives low during OV/UV fault or MR assertion; requires external pull-up to host logic voltage (e.g., 1.8 V or 3.3 V) |
| 5: GND | Ground reference | Common return path for internal comparators, reference, and output stage; must be low-impedance |
| 6: MR | Manual reset input | Pulled low (< 0.3 V) to force immediate RESET assertion; internally pulled up-can float when unused |
Key Features
| Feature | Design Value |
|---|---|
| Integrated resistor divider | Eliminates external threshold-setting resistors-reduces BOM count, layout area, and accuracy drift from resistor tolerances |
| Factory-programmed delay options | 10 ms and 200 ms reset timeouts selected solely by CT pin state-no timing capacitor or calibration required |
| Dual independent comparators | Simultaneous OV and UV detection with shared hysteresis-ensures robust window supervision without sequential polling |
| Functional safety documentation | TI-provided FIT rate, failure mode analysis, and diagnostic coverage data-supports ISO 26262 ASIL-B system integration |
| SENSE/VDD separation | Independent pins enable redundancy: SENSE monitors VCORE while VDD powers supervisor-critical for ASIL-D domain controllers |
Applications
| ADAS Camera Module | Automotive Digital Cluster |
|---|---|
Use Scenario: Monitors 2.5 V image sensor core supply in front-facing camera ECU subject to load dump and cold-crank transients. IC Role / Device Role / Timing Role: Window supervisor asserting RESET during <2.5 V undervoltage or >2.8 V overvoltage events, with 10 ms delay to filter brief dips. Use Value: Prevents corrupted image capture or sensor lockup by ensuring clean power-up and fault-triggered processor reset. |
Use Scenario: Supervises 3.3 V display interface supply in TFT cluster unit operating across –40°C to +125°C ambient. IC Role / Device Role / Timing Role: Dual-threshold monitor detecting both brownout (UV) and regulator overvoltage (OV) on same rail, latching RESET until recovery. Use Value: Eliminates display flicker or ghosting by enforcing strict 2.5 V–2.8 V window compliance before enabling GPU initialization. |
| HEV Battery Management MCU | Infotainment Application Processor |
Use Scenario: Guards 1.8 V MCU I/O supply in hybrid vehicle BMS node exposed to high EMI near traction inverter. IC Role / Device Role / Timing Role: High-immunity supervisor using 3.5 µs SENSE glitch filtering and internal hysteresis to reject switching noise-induced false trips. Use Value: Maintains MCU operational integrity without spurious resets during regenerative braking events. |
Use Scenario: Controls power-on sequencing of 2.8 V DDR memory supply in head-unit SoC subsystem. IC Role / Device Role / Timing Role: Resets application processor only after DDR rail stabilizes within 2.5 V–2.8 V window for ≥10 ms-enabling reliable memory training. Use Value: Reduces boot failures by replacing RC-based POR with temperature-stable, ±0.7% accurate timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3703A4250DSERQ1 | Same package and architecture, but UV/OV thresholds at 2.5 V / 2.2 V (±4%) - narrower window, lower OV trip | Better suited for 2.2 V–2.5 V rails (e.g., LPDDR4 I/O); not drop-in for 2.5 V–2.8 V VCORE supervision | Select only if target rail nominal is 2.35 V and window must center there; verify timing compatibility with existing CT configuration |
| TLV809E28DBVRQ1 | Single-channel undervoltage detector only (2.8 V threshold), SOT-23-3, ±1.5% accuracy, 1.6 µA IQ | Lacks overvoltage detection, manual reset, and programmable delay-requires external OV circuit for full window function | Use only for cost-sensitive, space-constrained UV-only applications where OV risk is mitigated elsewhere in design |
Compared with TPS3703A4280DSERQ1, the TPS3703A4250DSERQ1 offers tighter window alignment for lower-voltage rails but sacrifices OV margin, while TLV809E28DBVRQ1 reduces footprint and current at the cost of losing OV supervision, MR, and delay flexibility-making neither a direct replacement but viable alternatives for constrained use cases.
Availability
TPS3703A4280DSERQ1 is available at Aetrix Electronics and suitable for advanced driver assistance systems (ADAS), automotive digital cockpits, and HEV/EV battery management units requiring stable component supply with AEC-Q100 traceability and long-term automotive lifecycle support.
Supply support for TPS3703A4280DSERQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with deep expertise in automotive electronics, functional safety, and high-reliability power management.
The TPS3703-Q1 product line delivers AEC-Q100 Grade 1 window supervisors optimized for automotive domain controllers, ADAS sensors, and digital cockpit subsystems-designed to replace discrete resistor-based reset circuits with integrated, high-accuracy, low-power supervision.
FAQ
What is the exact overvoltage and undervoltage threshold configuration for TPS3703A4280DSERQ1?
The TPS3703A4280DSERQ1 has factory-trimmed thresholds of 2.8 V (VIT+) for overvoltage detection and 2.5 V (VIT−) for undervoltage detection, with ±4% window tolerance as indicated by the "4" in the part number suffix. These values are guaranteed across –40°C to +125°C and require no external components-verified in TI's SBVS344D datasheet Section 7.5.
Does TPS3703A4280DSERQ1 support manual reset functionality, and how is it implemented?
Yes, TPS3703A4280DSERQ1 supports manual reset via the MR pin (Pin 6). Driving MR below 0.3 V (VMR_L) asserts the active-low RESET output immediately. After MR returns high, RESET deasserts only after the configured reset delay (10 ms or 200 ms) expires-provided SENSE remains within the 2.5 V–2.8 V window. The MR pin features an internal 100 kΩ pull-up, allowing it to float when unused.
What are the reset time delay options for TPS3703A4280DSERQ1, and how are they selected?
TPS3703A4280DSERQ1 offers two fixed reset time delays: 10 ms (CT pin left open/floating) and 200 ms (CT pin connected to VDD via 10 kΩ resistor). These are factory-programmed modes-no external capacitor is needed. The device re-evaluates CT pin state each time SENSE re-enters the valid window, enabling dynamic delay selection in runtime-aware systems.
Is TPS3703A4280DSERQ1 qualified for automotive applications, and what AEC-Q100 grade does it meet?
Yes, TPS3703A4280DSERQ1 is AEC-Q100 qualified for automotive applications and meets Grade 1 specifications: operating ambient temperature range of –40°C to +125°C, HBM ESD level 2 (±2 kV), and CDM level C7B (±500 V on corner pins). This qualification is documented in TI's SBVS344D datasheet Section 1 and confirmed in the Device Information table.
How does the SENSE pin differ from the VDD pin in TPS3703A4280DSERQ1, and why is this separation important?
In TPS3703A4280DSERQ1, the SENSE pin (Pin 1) monitors the external supply rail (e.g., VCORE), while VDD (Pin 2) powers the supervisor itself. This separation enables architectural redundancy: if VDD fails independently (e.g., due to local LDO fault), the device can still supervise SENSE-but if SENSE fails, VDD may remain valid. This dual-rail independence is critical for ASIL-B/C domain controller safety architectures.
TPS3703A4280DSERQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.8V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (1.5x1.5)
TPS3703A4280DSERQ1 FAQ
1.How can I place an order for TPS3703A4280DSERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3703A4280DSERQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS3703A4280DSERQ1 reliable?
The price and inventory of TPS3703A4280DSERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3703A4280DSERQ1 is usually 5 days.
3.What payment methods are accepted for TPS3703A4280DSERQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3703A4280DSERQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS3703A4280DSERQ1?
TPS3703A4280DSERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3703A4280DSERQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS3703A4280DSERQ1?
For technical support, including TPS3703A4280DSERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3703A4280DSERQ1 requirements.
6.How does Aetrix verify that TPS3703A4280DSERQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3703A4280DSERQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS3703A4280DSERQ1 meets industry standards.
7.What is the process for return or replacement of TPS3703A4280DSERQ1?
All TPS3703A4280DSERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3703A4280DSERQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS3703A4280DSERQ1 part is unused and in its original packaging.
Return procedure for TPS3703A4280DSERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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